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What would be the effect of a change in temperature on the resistivity?
Wiki User
∙ 13y ago
it would decrease
Wiki User
∙ 13y ago
A change in temperature generally increases the resistivity of most materials. This is because as temperature rises, the atoms in the material start to vibrate more vigorously, causing more collisions between electrons and atoms. These collisions impede the flow of electrons, resulting in an increase in resistivity. Conversely, at lower temperatures, resistivity tends to decrease due to reduced atomic vibrations and fewer collisions.
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What is the effect of temperature on resistance of different metals?
with increase temperature in metal, thermal energy causes atoms in metal to vibrate, in this excited state atoms interact with and scatter electrons, thus decreasing the mean free path, and hence the mobility of electrons to decreases and resistivity increase(Resistivity = 1 / Conductivity )so conductivity of metal decrease as increasing in temperature
A control for the effect of a warm temperature would lack what factor?
enzyme
How would the size of an object affect the rate of change in temperature?
When a substance is heated, its particles begin moving and become active thus maintaining a greater average separation. Materials which contract with increasing temperature are rare; this effect is limited in size, and only occurs within limited temperature ranges. The degree of expansion divided by the change in temperature is called the material's coefficient of thermal expansion and generally varies with temperature.
Would it be correct to say that the Doppler effect is the apparent change in the speed of a wave due to the motion of the source?
No. The Doppler effect is about a change of frequency, not about a change of speed. The relative speed may change as well, but that's not what the Doppler effect is about.
Can a material gain energy and not change temperature?
Yes quite possible. This occurs at the change of state. As water gets changed into steam heat will be supplied but the temperature would remain at the boiling temperature.
What would environmental temperature change effect you?
Environmental temperature change would effect everything from crop growth to hibernation. It would effect me as a homo sapien greatly as all of my crops would be dying - leaving me to starve - and the temperatures that I have adapted to would no longer be the ones I would be subjected to. This could potentially be lethal. Of course, the effects of environmental temperature change would vary depending on the scale of the change.
What is the Change in resistivity of wire when its resistivity is doubled?
Resistivity of a wire of a certain material is independent of the wire's length. The only thing that would change is resistance. Since R=ρ/A, in the case of length doubling, resistance will also double.Resistance (R, Ω)Resistivity (ρ, Ω m)Length (, m)Cross surface area (A, m²)
How would you calculate current carrying capacity of the ACSR or AAAC conductor?
* ACSR or AAAC or anything else, it does not matter. * Conductivity depends on resistance of material and resistance depends on resistivity of material and some other factors. * Resistivity of any material is generally constant term and depends on material. resistivity of alluminium and cooper is different. * General equation for calculation of resistance is: R= SL/A where, R=resistance of material S=resistivity of material L = length of material and A = area of material and now finally I = V/R where, I = max. current which can pass at given voltage and temperature V=voltage applied R=resistance of material as calculated above remember R also depends on temperature also and varies with temperature....so for large change in temp. you will have to also consider that factor.
Does every different conducting substance have a unique resistivity?
Please note that resistivity also depends on temperature.In the most general case, the answer is definitely NO; all superconductors have the same resistivity, namely zero. Other than superconductors, take a look at a table with some typical resistivity values. It would seem quite obvious that for a given temperature: * Two different substances will, in general, have different resistivities. * In practice, in some cases the difference in resistivity might be too small to reliably measure. * It should be possible to find two substances that have the same resistivity at a very specific temperature - since the temperature-dependence will vary from one material to another. * Likewise, it should be possible to design a mix of two substances, which exactly matches that of another, given, substance.
What is the effect of temperature on resistance of different metals?
with increase temperature in metal, thermal energy causes atoms in metal to vibrate, in this excited state atoms interact with and scatter electrons, thus decreasing the mean free path, and hence the mobility of electrons to decreases and resistivity increase(Resistivity = 1 / Conductivity )so conductivity of metal decrease as increasing in temperature
How would global warming affect fruit and vegetable seasons?
Because a change in the earths temperature can cause effect the way fruits and vegetables grow
Why do conductor have a positive coefficent?
You mean positive temperature coefficient? Yes conductors as they get heated then due to the nucleii vibrating with greater amplitude would have a grip over the moving electrons and so the resistivity increases with the increase in temperature. Hence positive temperature coefficient.
What flows indefinitely in a superconductor?
A current of electricity can flow at the same strength for an indefinitely long time in a superconductor but only for as long as the superconductor is held below its critical temperature. If its temperature were allowed to rise to its critical temperature - or higher - the material would no longer behave as a superconductor: it would acquire resistivity which would restrict the flow of current.
If temperature is allowed to change in an experiment the temperature would be a?
The answer is variable.
What effect would thick cover have on the temperature of earths surface?
It would block out significant sunlight, lowering the temperature.
What effect would thick cloud have on the temperature of Earth's surface?
It would block out significant sunlight, lowering the temperature.
What effect would thick clouds have on the temperature of Earth's surface?
It would block out significant sunlight, lowering the temperature.
